Marietta, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Marietta, Illinois had a total population of 132, the 1292nd largest village in Illinois, with a median household income of $52,500, which is 37% lower than the state average. The poverty rate is 29.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 37% below the state average, indicating significant economic challenges.
- More than 1 in 4 residents live below the poverty line (29.5%), well above the national average of 12.4%.
- Housing is very affordable with a home-value-to-income ratio of just 1.2x.
- Unemployment rate of 15.9% is notably above the national average.
Marietta Quick Facts
How Marietta Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 110 | 132 | +20.0% |
| Median household income | $57,188 | $52,500 | -8.2% |
| Median home value | $81,700 | $65,000 | -20.4% |
How Marietta Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Marietta Rankings in Illinois
Explore Illinois Rankings
Other Cities in Fulton County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Canton | 13,144 | $53,254 | 15.2% | $107,100 |
| Lewistown | 1,781 | $54,000 | 11.5% | $102,200 |
| Cuba | 1,004 | $42,375 | 22.7% | $63,900 |
| Astoria | 984 | $50,536 | 15.2% | $67,600 |
| Vermont | 698 | $48,846 | 19.6% | $57,000 |
| Avon | 694 | $50,000 | 23.1% | $62,200 |
| Ipava | 487 | $48,698 | 22.6% | $66,300 |
| St. David | 383 | $54,583 | 16.1% | $65,400 |
| Fairview | 324 | $58,125 | 9.6% | $91,400 |
| Dunfermline | 314 | $70,833 | 11.8% | $119,300 |
Cities Similar to Marietta
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Kingston | 132 | N/A | N/A | 14.3% | 82.6% |
| Eagle Lake | 131 | N/A | N/A | 26.7% | 0.0% |
| Papineau | 132 | $51,250 | $72,000 | 20.9% | 12.1% |
| Burtons Bridge | 134 | N/A | $244,000 | 0.0% | 0.0% |
| Westervelt | 134 | N/A | N/A | 0.0% | 0.0% |
A note before these figures: with a population of 132, Marietta's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Marietta is a small community located in Illinois, within Fulton County. The total population is 132. It ranks as the 1292nd most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Marietta is 34.7 years. This is 11% lower than the state median of 39.0 years. With 28.0% of the population under 18, Marietta has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Marietta is $52,500. This is 37% lower than the state median of $83,390. It is also 35% lower than the national median of $80,734. The poverty rate stands at 29.5%. This is 150% higher than the state poverty rate of 11.8%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 15.9%. This is 173% higher than the state rate of 5.8%. The median home value is $65,000. Housing costs are 75% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.2x, Marietta is one of the most affordable housing markets in the area. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 49% higher than the state average of 67.1%.
Race & Ethnicity
Every resident counted in Marietta was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.
Education
11.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 71% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 87.7%.
Data Sources & Methodology
All demographic data for Marietta, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Marietta, Illinois?
Marietta, Illinois has a population of 132 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Marietta, IL?
The median household income in Marietta is $52,500, which is 35% lower than the national median of $80,734.
What is the poverty rate in Marietta, IL?
The poverty rate in Marietta is 29.5%. This means approximately 39 residents live below the federal poverty line.
What is the racial makeup of Marietta, Illinois?
Marietta's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Marietta, IL?
The median home value in Marietta is $65,000. The home-value-to-income ratio is 1.2x.
How educated is Marietta, Illinois?
11.1% of adults (25+) in Marietta hold a bachelor's degree or higher, and 0.0% hold a graduate or professional degree.